rj-45 connector schematic diagram RJ45 is a type of registered jack which is a standardized physical network interface for connecting telecommunications or data equipment to a service provided by a local exchange carrier or long distance carrier. It is commonly used for network cabling and for telephony applications. Although used for a variety of purposes, the RJ-45 connector is probably most commonly used for 10Base-T and 100Base-TX Ethernet connections. Below table shows the RJ-45 Connector Pinout based on Ethernet 10BASE-T / 100BASE-TX, EIA/TIA 568A and EIA/TIA 568B or AT&T 258A.

Pin #

Ethernet 10BASE-T
100BASE-TX

EIA/TIA 568A EIA/TIA 568B or AT&T 258A
1 Transmit + White with green strip White with orange stripe
2 Transmit – Green with white stripe or solid green Orange with white stripe or solid orange
3 Receive + White with orange stripe White with green stripe
4 N/A Blue with white stripe or solid blue Blue with white stripe or solid blue
5 N/A White with blue stripe White with blue stripe
6 Receive – Orange with white stripe or solid orange Green with white stripe or solid
7 N/A White with brown strip or solid brown White with brown strip or solid brown
8 N/A Brown with white stripe or solid brown. Brown with white stripe or solid brown.

RJ-45 EIA/TIA T568A Cable Wiring Color Code

RJ45 Ethernet cable connector EIATIA 568A

RJ-45 EIA/TIA T568B Cable Wiring Color Code

RJ-45 EIATIA T568B Cable Wiring Color Code



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